Annular communication network of urban rail train

A communication network and urban rail train technology, applied in the field of ring communication network, can solve the problems of low communication performance, time-consuming and laborious, limited data transmission capacity, etc., to achieve the effect of enhancing real-time performance and improving reliability

Active Publication Date: 2015-05-13
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This reduces the real-time performance of the data to a certain extent
[0008] 4. In the bus-type TCN topology based on MVB communication technology, the communication mode is half-duplex communication, and the communication performance is not high
This undoubtedly increases the manufacturing cost of urban rail trains
[0009] 5. In the bus-type TCN topology based on MVB communication technology, due to the limited data transmission capacity, all communication equipment cannot be updated and maintained remotely, requiring staff to operate on-site
This is time consuming and laborious

Method used

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  • Annular communication network of urban rail train
  • Annular communication network of urban rail train
  • Annular communication network of urban rail train

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no. 1 example

[0039]In this embodiment, the urban rail train ring communication network provided by the present invention is composed of two ring local area networks that work independently of each other. For this reason, each compartment of the urban rail train is equipped with at least one communication switching device (abbreviated as a switch in the present invention). For example, Ethernet communication cables (M12 wires) can be used to physically connect the switches in each car, and the ports of the switches can be configured to isolate the two ring networks into two mutually independent communication LANs. Since urban rail trains operate in single-group, it is only necessary to arrange a single-group communication network in the train. Moreover, since the communication in the marshalling generally adopts the multicast mode, the switch configured in each car preferably adopts a layer 2 Ethernet switch (also called an Ethernet marshalling network node, Ether Consist Network Node-ECNN)...

no. 2 example

[0056] In this embodiment, the urban rail train ring communication network provided by the present invention is composed of three ring local area networks that work independently of each other. Similar to Embodiment 1, in this embodiment, by setting the port attributes of the switches configured in each carriage, the three ring networks are set as local area networks that communicate independently with each other. Among them: the first ring LAN is used to transmit relevant data of driving control; the second ring LAN is used to transmit multimedia data including audio and video; the third ring LAN is specially used to transmit the monitoring data of the camera in the car. Of course, the third ring local area network can also be used for other automatic data transmissions such as guiding train storage and maintenance, that is, to meet subsequent function expansion requirements.

[0057] In addition, a ring LAN can be constructed using traditional connection methods. That is, e...

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Abstract

The invention discloses an annular communication network of an urban rail train. The annular communication network comprises two or more than two annular local area networks which are independently communicated with each other; each annular local area network is formed by exchangers through communication connection, wherein the exchangers are arranged in compartments of the urban rail train respectively; the annular networks are separated into the local area networks which are independently communicated with each other through the configuration on ports of the exchangers so as to transmit different types of data. According to the annular communication network of the urban rail train, train operation state data, train diagnostic data and train operation control instructions can be transmitted, the safety, the real-time performance and the reliability of the network communication in a train are enhanced, and accordingly the development of the subsequent extension application such as the remote update of equipment applications, the train informatization and intellectualization and the multimedia data transmission in the train can be possible.

Description

technical field [0001] The invention relates to the technical field of rail transit communication, in particular to a ring communication network inside an urban rail train. Background technique [0002] Urban rail transit (urban rail) has become the first choice for most cities to relieve traffic pressure due to its large capacity and fast speed. During the operation of urban rail trains, in order to monitor the running status of the train, realize the fault diagnosis of the train, and achieve the automatic control of the train operation, the related monitoring and control equipment in the train will generate a large number of commands related to the running status of the train, train fault diagnosis, and train operation control. related data. The generation and consumption of these data are often located in different on-board equipment, so it is necessary to build a communication network inside the train to transmit these data from its production equipment to its consumpti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04L12/437
Inventor 邹智荣肖华粟爱军杨卫峰唐鹏辉唐军李思源
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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